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Fennel is a programming language created in 2016 by Calvin Rose.

#142on PLDB 8Years Old 207Repos
Download source code:
git clone

Lua Lisp Language

Example from the web:
;; Sample: read the state of the keyboard and move the player accordingly (local dirs {:up [0 -1] :down [0 1] :left [-1 0] :right [1 0]}) (each [key delta (pairs dirs)] (when (love.keyboard.isDown key) (let [[dx dy] delta [px py] player x (+ px (* dx player.speed dt)) y (+ py (* dy player.speed dt))] (: world :move player x y))))
Example from hello-world:
(print "Hello World")

Language features

Feature Supported Token Example
; -?\d+
; -?\d+\.\d+
Strings "
"Hello world"
Print() Debugging print
; A comment
Line Comments ;
; A comment
Semantic Indentation X

View source

- Build the next great programming language · About · Acknowledgements · Part of the World Wide Scroll